The DeWalt DC9310-XE charger will charge all DEWALT 7.2V - 18V NiCd/NiMH/Li-Ion batteries (except Univolt batteries) so users need only one charger for multiple cordless products. It charges the battery in 1 hour or less resulting in less downtime and increasing productivity. The DEWALT 3-stage charging system provides maximum run-time and extends overall life and management of the battery. The chargers built in diagnostics had a LED indicator that displays the battery charge status. These include charged, charging, power line problem, replace pack, and battery too hot or too cold.